Overview
The TMCS1107A1BQDR is a high-accuracy, galvanically isolated Hall-effect current sensor produced by Texas Instruments. This device is designed for DC or AC current measurement with excellent linearity and temperature stability. It features a low-drift, temperature-compensated signal chain that ensures a total error of ±3% maximum across the device temperature range of –40°C to 125°C. The sensor uses an internal 1.8-mΩ conductor to generate a magnetic field measured by an integrated Hall-effect sensor, eliminating the need for external concentrators and simplifying the design process. The TMCS1107A1BQDR provides robust 420-V lifetime working voltage and 3-kVRMS basic isolation between the current path and circuitry, ensuring high safety and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Sensitivity | 50 mV/A | mV/A |
| Sensitivity Error | ±0.9% (–40°C to 125°C) | % |
| Offset Error | ±40 mA | mA |
| Offset Drift | ±0.2 mA/°C | mA/°C |
| Linearity Error | ±0.5% | % |
| Operating Supply Range | 3 V to 5.5 V | V |
| Signal Bandwidth | 80 kHz | kHz |
| Isolation Rating | 3 kVRMS | kVRMS |
| Lifetime Working Voltage | 420 V | V |
| Input Conductor Resistance | 1.8 mΩ | mΩ |
| Maximum Continuous RMS Current | 16 A (at 125°C) | A |
| Supply Current | 6 mA (maximum) | mA |
Key Features
- High Accuracy: Total error of ±3% maximum across the device temperature range.
- Multiple Sensitivity Options: Available in 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A sensitivity options.
- Galvanic Isolation: 3-kVRMS basic isolation and 420-V lifetime working voltage.
- Temperature Stability: Low-drift, temperature-compensated signal chain.
- Common Mode Rejection and Transient Immunity: Integrated electrical shielding for excellent common-mode rejection and transient immunity.
- Unidirectional and Bidirectional Sensing: Available in both unidirectional and bidirectional sensing variants.
- Low Power Loss: Low conductor resistance minimizes power loss and thermal dissipation.
- Safety Certifications: UL 1577 component recognition program and IEC/CB 62368-1 certified.
Applications
- Motor and Load Control: For precise current measurement in motor control systems.
- Inverter and H-Bridge Current Measurements: Suitable for current sensing in inverter and H-bridge configurations.
- Power Factor Correction: Used in power factor correction circuits to optimize power efficiency.
- Overcurrent Protection: For detecting and preventing overcurrent conditions in various applications.
- DC and AC Power Monitoring: Ideal for monitoring both DC and AC power in various systems.
Q & A
- What is the sensitivity of the TMCS1107A1BQDR?
The sensitivity of the TMCS1107A1BQDR is 50 mV/A.
- What is the operating temperature range of the TMCS1107A1BQDR?
The operating temperature range is –40°C to 125°C.
- What is the isolation rating of the TMCS1107A1BQDR?
The isolation rating is 3 kVRMS.
- What is the maximum continuous RMS current the TMCS1107A1BQDR can handle?
The maximum continuous RMS current is 16 A at 125°C.
- Does the TMCS1107A1BQDR support both unidirectional and bidirectional current sensing?
- What are the safety certifications for the TMCS1107A1BQDR?
- What is the input conductor resistance of the TMCS1107A1BQDR?
- What is the signal bandwidth of the TMCS1107A1BQDR?
- What is the maximum supply current of the TMCS1107A1BQDR?
- What are some common applications of the TMCS1107A1BQDR?
